You may have wondered if your vehicle was in good condition, enough to support a long trip or for daily use. Beyond a routine check of the car and using the recommended mileage- based maintenance services, there is a very simple way to check the condition of your engine, we explain how to measure the compression of the car engine efficiently.
The tool you need for this operation is a manometer. It can be found in shops specializing in accessories for cars or on the Internet.
Start by turning on the car and let the engine warm up to regulate the temperature. Do not perform this operation with the engine cold. The best is to perform this operation once you have made a ride with the car.
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Stop the engine and once off, disconnect the high-voltage cables under the spark plugs, always paying attention to what you are doing, because you will then have to connect them in the same position. If you do not want errors, you can take a picture of the candles before disconnecting the cables.
Unscrew a candle and place the pressure gauge tip into the hollow where the spark plug is inserted. It is very important that the gauge tip completely clogs this hole.
At this time, you will have to ask another person to turn on the car’s engine and accelerate about 4 seconds. You will be able to measure the compression of the engine of this candle. Turn off the engine and repeat the operation with each of the spark plugs in your car.
Each of the car’s candles must have the same pressure. In addition, it is important that the pressure corresponds to that indicated in the manual by the manufacturer of the car. If the engine is petrol, the difference between the spark plugs can be up to 1.5 bar, which is perfectly normal.
If you do not know the manufacturer’s compression data for the engine in your car, then base your engine on compression levels (gasoline or diesel) and add these numbers. For example, in a 14: 1 compression level, add 14 1 and the result, 15, should be the value of the pressure indicated on the manometer.
If the car engine has compression problems, it is best to do a review to determine the source of the leak and solve the problem with a professional.
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